It is possible to use your HD television as a computer monitor at home or at work for presentations. With the sizes of modern televisions, it is a toss-up whether to use a television or a projector, especially in a small group. Obviously, large audiences still benefit from projection.

Since High Definition televisions started production, they have typically had several different connections possible. They allow for cable, HDMI, component, DVI, and VGA connections.

Computers use VGA and DVI connections. The connection on the television will look exactly like the connection on the computer. You will need to run down to your local computer shop to purchase a male-to-male VGA monitor cable. If there is no computer shop nearby, you can purchase an affordable one at Amazon.com (10ft Hi Resolution monitor cable (Male to Male)) OR (DVIMM6 6' Digital LCD Monitor Cable Replacement DVI-D Male to DVI-D Male 4.95 GBPS).

You should be aware that this only allows for sharing the video signal from your computer or laptop. Audio would still come from your computer. If you want to use audio through your television, then you may go with component or HDMI.

I have known people who use their LCD televisions as computer monitors all the time. This frees them from using their glasses to see the details on their screen. If you are thinking about using your HDTV as a full-time monitor, you may consider changing your video card to one with HDMI so that you can take full advantage of the high definition display.